47500020 has 120 divisors (see below), whose sum is σ = 150935400. Its totient is φ = 12503808.

The previous prime is 47500009. The next prime is 47500039. The reversal of 47500020 is 2000574.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1205604 + 46294416 = 1098^2 + 6804^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 47499966 and 47500002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 176446 + ... + 176714.

It is an arithmetic number, because the mean of its divisors is an integer number (1257795).

Almost surely, 2^47500020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47500020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75467700).

47500020 is an abundant number, since it is smaller than the sum of its proper divisors (103435380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47500020 is a wasteful number, since it uses less digits than its factorization.

47500020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 47500020 is about 6892.0258269975. The cubic root of 47500020 is about 362.1578730012.

Adding to 47500020 its reverse (2000574), we get a palindrome (49500594).

The spelling of 47500020 in words is "forty-seven million, five hundred thousand, twenty".